I was working with virtualbox on ubuntu 14.04 suddenly it closed and didn't start afterward. when I tried to load it from terminal it showed me LibQtCore.so.4 file too short, which I've fixed it by reinstalling all needed libraries.

but after rebuilding libraries when I try to open virtualbox from terminal I get :

Segmentation fault (core dumped)

And there is no clue what should I do to fix this. Also my vlc and clementine players has the same status.

what should I do to fix this?

  • Just to be sure, do a memtest to see if your RAM is failing. – fkraiem Jan 6 '18 at 5:23
  • @fkraiem sure i will, but i don't it's ram problem. I have 32 gig ram. and never had a problem with it. – Mohammad_Hosseini Jan 6 '18 at 5:24
  • Have you tried purging and reinstalling VirtualBox? – NerdOfCode Jan 6 '18 at 5:50
  • @NerdOfCode I've just tried, I removed it entirly and result was the same. – Mohammad_Hosseini Jan 6 '18 at 5:56
  • @fkraiem I've done memetest and there was nothing wrong. – Mohammad_Hosseini Jan 6 '18 at 6:05

I have had similar issues with virtualbox myself.

I was running on the latest virtualbox 5.2.6 on my ubuntu 16.04.

I did a purge and autoremove all of its libraries+virtualbox.

Installed previous stable version - 5.1.32 and its extensions.

Everything worked fine ever since.

Try to run these commands:

sudo apt-get update
sudo apt-get install -f
sudo apt-get purge virtualbox-5.2.x
sudo apt-get autoremove
sudo apt-get install virtualbox-5.1

if you can't install it from commandline then go to their website: https://www.virtualbox.org/wiki/Downloads

Download the 5.1.32 for ubuntu 14.04/16.04 install the .deb file package by:

sudo dpkg -i virtualbox-5.1_5.1.32-120294_Ubuntu_xenial_amd64.deb

Let us know how it goes.

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